1. Flowers

2. Function – attract pollinators to aid in reproduction

3. Parts of a flower Sepals - modified leaves that protect the bud
- often green

4. Parts of a flower
Petals
- broad and flat
- very colorful

5. Parts of a flower
Pistil – female reproductive structure – center

6. Parts of the Pistil - stigma – top of the pistil, sticky to collect
pollen
stigma

7. Parts of the Pistil
- style – long, slender part of pistil
style

8. Parts of the Pistil - ovary – base of the pistil, develops into a
fruit
ovary

10. Parts of a flower
Stamen – male reproductive structure

11. Parts of the Stamen anther – saclike structures that produce pollen

12. Parts of the Stamen
filament – thick stalk, holds up anthers
filament

13. Review
anther
stigma
style
filament
ovary
petal
sepal

14. Vascular Tissue

16. Xylem
Transports water and minerals up the plant
One way only

17. Xylem
Large inside straws
Made of thick dead cells

18. Xylem

19. Phloem
Transports food molecules to all parts of the plant
Two way

20. Phloem
Smaller outside vessels
Made of living cells

23. Plant Processes

24. Photosynthesis – process plants use to make their own food

25. Takes place…
In the chloroplasts of leaf cells

26. Photosynthesis
Carbon dioxide + water + light = glucose + oxygen

27. ___CO2 + ___H2O + light = C₆H₁₂O₆ + ___O2 Balance the Equation!
Photosynthesis
___CO2 + ___H2O + light =
C₆H₁₂O₆ + ___O2
Balance the Equation!

28. Transpiration – water vapor leaving the leaves

29. Transpiration
Water exits through the stoma

30. Transpiration
Roots reabsorb water
to replace water lost through leaves

31. Plant Tropisms
Tropism – plant growth in response to a stimulus

32. Positive tropism – grow toward a stimulus

33. Negative tropism – grow away from a stimulus

34. Phototropism
Response to light

35. Gravitropism
Response to gravity

36. Thigmotropism
Response to touch

37. Not really a tropism because it is short term and reversible

38. Phototropism, Gravitropism, Thigmotropism?

39. Phototropism, Gravitropism, Thigmotropism?

40. Phototropism, Gravitropism, Thigmotropism?

41. Phototropism, Gravitropism, Thigmotropism?

42. Seasons and Leaf loss

43. evergreen trees – do not lose all their leaves at once

44. slowly shed all year long

45. deciduous trees – lose all their leaves around the same time each year

46. Annuals – lives, reproduces, and dies in one year
Examples: peas, corn, garden flowers

47. Biennials – completes it’s life cycle in 2 years
Examples: carrots, beats, pansies

48. Perennials – continues to grow year after year
Examples: trees, tulips